"Sideburns don't need your sympathy."
With a lyric as meaningless as that, you have an idea of the fun this frothy nothingness of a movie provides. As others have noted, this isn't a beatnik movie, but a crime drama involving some young hoodlums and a singing career for their leader. I can't think of an actual beatnik movie here other than the horror comedy A Bucket of Blood
in which beatniks are parodied.
The cast provided wonderful absurdity. There's Helen (Joyce Terry), the startling blonde insectoid love interest trying to draw Eddy (Tony Travis) away from his criminal friends, Iris (Karen Kadler), Eddy's jealous main squeeze, uttering overwrought and just plain terrible lines, and the over-the-top psychopathic behavior of Mooney (Peter Breck), who is also jealous of Eddy, and finds his own pathway to fame.
It's fun to count how many times Eddy says variations of "Shut up, Iris." I've seen this MST3K'ed. It's still available on DVD. It's very entertaining either way!